AirLink Communications Raven X HSDPA Guía de usuario descargar pdf (Pagina 8)

Raven X HSDPA for Cingular - User Guide, version 2.33 3

Introduction to Raven X HSDPA

Most ISPs (cellular included) use dynamic IP addresses rather than static IP addresses since it

allows them to reuse a smaller number of IP addresses for a large number of customers. A

dynamic IP address is suitable for many common Internet uses, such as web browsing, looking up

data on another computer system, or other client functions (such as data only being sent out or only

being received after an initial request).

Common Uses for the Raven X

If you need to contact your Raven X, a device connected to the modem, or a host system using the

modem from the Internet, you need to have a known IP (such as one which is static) or domain

name (an IP address which is converted by a DNS server into a word based name). If you have a

dynamic IP address for your modem, you can use a Dynamic DNS service (such as IP Manager,

page

14) to translate your IP address into to a domain name.

Caution: If you want to connect remotely to your Raven X using TCP/IP, the IP

address given to your modem by the network cannot be a private or internal IP

address (such as a custom APNData Link) unless you are on the same network or

inside that network’s firewall (such as with frame relay).

Using Your Raven X to Connect to the Internet

In Public Mode, your Raven X will pass the IP address from Cingular’s network to your device or

computer. In Private Mode, your modem will assign configured, static local network IP addresses

for the modem and your device.

The modem will perform a one-to-one routing for all internet traffic to and from the computer or

other end device.

If you need to have more than one device connected to the Internet through the modem, you will

need to have a router connected to the modem. The modem would provide the one-to-one con

nection to the router with the router configured to provide a broader NAT service to the other

devices connected to it.

You can connect directly through your Raven X to the Internet using the Ethernet port or use

PPPoE for a password protected connection. For a direct connection, the Raven X features DHCP

(enabled by default) so you don’t need to worry about setting up an IP address on your computer.

DHCP works with both Private and Public Modes.

To use your Raven X’s serial port to connect to the Internet from your computer, you need to con-

nect the computer directly to the Raven X’s serial port with a straight-through serial cable and use

Dial-Up Networking (DUN).

The Raven X’s rugged construction and cellular connection make it ideal for use in remote and/or

industrial locations.

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